PatchSiren

PatchSiren cyber security CVE debrief

CVE-2023-52810 Siemens CVE debrief

This CVE addresses a vulnerability in the Linux kernel's Journaled File System (JFS) implementation. The issue involved a missing validation check for negative values of the `db_l2nbperpage` parameter, which could lead to undefined behavior or system instability. The vulnerability was resolved by adding an explicit check to prevent negative values from being processed. Siemens has identified this CVE as affecting certain industrial networking products, specifically the RUGGEDCOM RST2428P and SCALANCE X family devices running SINEC OS, with the threat assessment categorized as 'Misinformed' per the CSAF advisory. The advisory was initially published on August 12, 2025, and subsequently updated on February 25, 2026, to reflect corrections to affected product listings and removal of unsupported product versions. No CVSS score or severity rating is available in the source corpus. This vulnerability is not listed in CISA's Known Exploited Vulnerabilities (KEV) catalog.

Vendor
Siemens
Product
RUGGEDCOM RST2428P (6GK6242-6PA00)
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2025-08-12
Original CVE updated
2026-02-25
Advisory published
2025-08-12
Advisory updated
2026-02-25

Who should care

Organizations operating Siemens industrial networking equipment including RUGGEDCOM RST2428P switches and SCALANCE X family devices (XC-300/XR-300/XC-400/XR-500WG/XR-500, XCM-/XRM-/XCH-/XRH-300 families) running SINEC OS. System administrators responsible for industrial control system security and Linux kernel maintainers should monitor for applicable patches.

Technical summary

The vulnerability exists in the Linux kernel's JFS (Journaled File System) implementation where the `db_l2nbperpage` parameter was not validated for negative values. This parameter, which represents the logarithm base 2 of the number of blocks per page, could potentially be set to a negative value leading to incorrect memory calculations or filesystem corruption. The resolution adds an explicit bounds check to reject negative values before they are used in subsequent calculations. This is a defensive coding fix that prevents potential integer-related issues in filesystem operations.

Defensive priority

medium

Recommended defensive actions

  • Review Siemens ProductCERT advisory SSA-613116 for detailed product-specific guidance
  • Verify SINEC OS version on affected SCALANCE and RUGGEDCOM devices
  • Apply vendor-provided patches or updates as specified in Siemens security advisory
  • Monitor CISA ICS advisories for additional guidance on industrial control system security practices
  • Implement defense-in-depth strategies for industrial control systems per CISA recommended practices

Evidence notes

The vulnerability description indicates a kernel-level filesystem validation fix. Siemens CSAF advisory ICSA-25-226-15 tracks this CVE with threat category 'Misinformed' for affected product IDs. The advisory underwent four revision cycles, with the most recent update on February 25, 2026, removing unsupported SINEC OS versions and rejected CVEs from the advisory scope.

Sources and references

Verified primary and authoritative sources

  • CVE-2023-52810 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2023-52810

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2023-52810 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2023-52810

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2025/icsa-25-226-15.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-613116.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-613116.html

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-25-226-15

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-alerts/ics-alert-10-301-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/topics/industrial-control-systems

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf

    Reference

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.